Is E11 a billable ICD-10-CM code?

No. E11 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does E11 sit in the tabular list?

Endocrine, nutritional and metabolic diseases (E00-E89), in the block Diabetes mellitus (E08-E13).

What cannot be coded together with E11?

E11 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

E11

E11 — Type 2 diabetes mellitus

Non-billable headerICD-10-CM

E11 is a non-billable header ICD-10-CM code for type 2 diabetes mellitus. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

diabetes mellitus due to underlying condition (E08.-)
drug or chemical induced diabetes mellitus (E09.-)
gestational diabetes (O24.4-)
neonatal diabetes mellitus (P70.2)
postpancreatectomy diabetes mellitus (E13.-)
postprocedural diabetes mellitus (E13.-)
secondary diabetes mellitus NEC (E13.-)
type 1 diabetes mellitus (E10.-)

Use additional code

Add a secondary code to capture the detail described below.

code to identify control using:
injectable non-insulin antidiabetic drugs (Z79.85)
insulin (Z79.4)
oral antidiabetic drugs (Z79.84)
oral hypoglycemic drugs (Z79.84)

Includes

Conditions this code covers.

diabetes (mellitus) due to insulin secretory defect
diabetes NOS
insulin resistant diabetes (mellitus)

Other codes that can never be billed with E11

These codes carry an Excludes1 note pointing at E11. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E11 alone.

E11.AType 2 diabetes mellitus without complications in remission
E87.2Acidosis
E09Drug or chemical induced diabetes mellitus
E08Diabetes mellitus due to underlying condition
E10Type 1 diabetes mellitus
E11.9Type 2 diabetes mellitus without complications
E16.1Other hypoglycemia
E16.2Hypoglycemia, unspecified

Risk adjustment

E11 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead E11

10 child codes. Green means billable.

Questions about E11

Is E11 a billable ICD-10-CM code?: No. E11 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does E11 sit in the tabular list?: Endocrine, nutritional and metabolic diseases (E00-E89), in the block Diabetes mellitus (E08-E13).
What cannot be coded together with E11?: E11 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.